Flush tank



Jam, 23, 1923..

R, F. DAVISSON,

FLUSH TANK FILED FEB. 23 922 INVENTOR.

E AWMMWUM FA TTORNEY! Patented den. 23%, i

RUSSELL F. DAVISSON, 01E TULSA, OKLOIWEA.

rtusrr rank.

Application filed February 23, 1922.

re all whom it may cance /n Be it known that l, RUSSELL l DAVISSON, a citizen of the United States, residing at Tulsa, in the county of Tulsa and State of Uklahoma, have invented certain new and useful Improvements in Flush Tanks, of which the following is a specification.

This invention relates to flushing apparatus, and has for one of its objects to simplify and improve the construction and increase the efiiciency and utility of devices of thi character.

Another object of the invention is to provide a device of this character which is practically silent, certain and positive in its action composed of few parts and without washers, valves or ground seats, and not liable therefore to get out of order, and can be adapted without material change of structure to flush tanks of various sizes and employed for various purposes.

With these and other objects in view the invention consists in certain novel features of construction as hereinafter shown and described and then specifically pointed out in the claims, and in the drawings illustrative of the preferred embodiment of the invention: Figure 1 is a sectional elevation with a tank and a part of the siphoning device in section.

Figure 2 is an edge view of thesiphoning device with th tank in section.

Figure 8 is a transverse section on the line 33 of Figure 1.

The improved device may be installed in any of the usual construction of flush tanks, and for the purpose of illustration is shown thus applied, the tank being represented conventionally at 10, the intake valve at 11, controlled by a float device 12.

Connected through the bottom of the tank is a flush pipe 13 including a coupling 14:, and suitably packed as indicated at 15.

At its upper end the member 14 is pro-- vided with an outwardly directed flange 16 to receive the lower end of an outer tube 17. The tube 17 may be soldered, brazed, threaded or otherwise firmly secured in the cou pling 14.

At its lower end the outer tube 17 is reduced as shown at 18 to form a seat for the lowerend of an inner tube 19, the tubes 17 and 19 being thus spaced to form a cissemi no. 538,608.

tern for a liquid sealing element, such as mercury, indicated at 20. y

B y this means the spaced tubes are firmly supported in vertical position open at the top and the inner tube communicating directly with the discharge 13.

Encompasing the outer tube 17 at its upper end is a divided collar or band 21 clamped at 22 in position and having a laterally directed guide arm 23 extending from one Side anda supporting arm 24 extending from the other side. The arm 24 is divided at its free end and provided with a guide aperture to receive a vent or reliever pipe 25.

Alt its lower end the pipe 25 passes through a suitable packing indicated at 26, and thence through the coupling member 14 into the discharge 13, and by dividing outer end of the arm 24:, the latter may be pinched upon the vent or relief pipe and enables it to be adjusted to any required extent.

Rising from the extension 24.- of the band member 21 is a standard 27 having a laterally directed combined guide and stop member 28 attached to its upper end, as shown.

The movable siphon member comprises spaced leg portions 29 and 30 and a connecting head member 31, the leg portion 30 being operative between the outer tube 17 and the inner tube19.

The lowerend of the tube 30 is constantly immersed at its lower end in the sealing element 20.

At its upper end the head member is increased in thickness to receive the lower end of a vertical rod 32 and the upper end of a" vent tube 33, the latter directed downwardly and upturned at the lower end as at- 84. The terminal 34 islocated at the low water line of the tank, so that when the water falls far enough to uncover the terminal 34, air will enter and break the siphon and stop further discharge from the tank.

Mounted for rotation throu h the side walls of the tank is a rock shaft 35 having an operating lever 36 at one end externally of the tank. Attached to the shaft 35 within the tank is an arm 37, the latter connected by a link 38 to the head portion 31 of the siphon member.

A spring 39 surrounds the rod 32 and bears at its lower end upon the combined stop and guide 28 and at its upper end against an adjusting nut 40 on the rod 32. The spring thus exerts its force to hold the siphon device yieldably in upper position.

The normal or high water line is indicated at 41, and when this stage of the water is present in the tank, the buoyancy of the float 12 will maintain the valve 11 closed and the spring 29 will hold the siphon member in elevated or inoperative position.

lVhen it is desired to produce the flushing action, the lever 36 is operated to move the .arm 37 downwardly and cause the link 38 13 until the water falls below the terminal 34 when the inrush of air through the tube 33 will fbreak the siphon, when the spring 39 will return the siphon to its upper position.

The inlet valve 11 is held open by the i downward position of the float 12 until the inflowing water elevates the float into the position shown in Figures 1 and 2, when the valve 11 will be *closed and the further in- The operation is automatic except the single movement of the lever 36.

The device is simple in construction, can be constructed of any suitable metal, and operates effectually for the purposes described.

The device is practically noiseless in its operation, as there are no valves nor open ports to admit air to cause noise during the flushing operation.

The preferred embodiment of the invention is disclosed in the drawings and set forth in the specification, but it will be understood that modifications within the scope of the claimed invention may be made in the construction without departing from the principle of the invention or sacrificing any of its advantages.

Having thus described the invention what is claimed as new is 2- 1. In a flushing apparatus, a tank, a discharge coupling connected through the bottom of the tank. an outer tubular member open at the upper end and connected at the lower end into the discharge coupling, the interior of the outer tube being reduced at the lower end. an inner tube open at the upper end and coupled at the lower end in the reduced portion of the outer tube, the space between the outer and inner tubes providing a cistern for a liquid sealing element, a siphon device including spaced legs and a connecting head with one of the legs disposed between the outer and inner tubes and constantly immersed at its lower end in the sealing element, a standard rising from the outer tube and carrying a lateral guide and stop member, a rod connected to said siphon head and extending through the guide and stop member, a spring bearing on said guide and stop member and operating to hold the rod and the siphon device carried thereby yieldably in upper position, a vent tube connected into said siphon head, and means for manually depressing the siphon device against the resistance of said spring.

2. In a flushing apparatus, a tank. a discharge coupling connected through the bottom of the tank, an outer tubular member open at the upper end and connected at the lower end into the discharge coupling, an inner tube open at the upper end and coupled at the lower end in the discharge coupling. the space between the outer and inner tubes providing a cistern for a liquid sealing element, a siphon device including spaced legs and a connecting head with one of the legs disposed between the outer and inner tubes and constantly immersed at its lower end in the sealing element, a standard rising from the outer tube and carrying a lateral guide and stop member, a rod connected to said siphon head and extending through the guide and stop member, a spring bearing on said guide and stop member and operating to hold the rod and the siphon device carried thereby yieldably in upper position, a vent tube connected into said siphon head, and means for manually depressing the siphon device against the resistance of said spring.

In testimony whereof, I aflix my signature hereto.

Feb. 8, 1922.

RUSSELL F. DAVI'SSON. 

